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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /dom/media/webaudio/test/test_waveDecoder.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-upstream/115.8.0esr.tar.xz firefox-esr-upstream/115.8.0esr.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webaudio/test/test_waveDecoder.html')
| -rw-r--r-- | dom/media/webaudio/test/test_waveDecoder.html | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_waveDecoder.html b/dom/media/webaudio/test/test_waveDecoder.html new file mode 100644 index 0000000000..65c429f2ba --- /dev/null +++ b/dom/media/webaudio/test/test_waveDecoder.html @@ -0,0 +1,69 @@ +<!DOCTYPE HTML> +<html> +<meta charset=utf-8> +<head> + <title>Test that we decode uint8 and sint16 wave files with correct conversion to float64</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<pre id="test"> +<script class="testbody" type="text/javascript"> +var testsDone = 0; +var tests = ["UklGRjUrAABXQVZFZm10IBAAAAABAAEAESsAABErAAABAAgAZGF0YQMAAAD/AIA=", + "UklGRkZWAABXQVZFZm10IBAAAAABAAEAESsAACJWAAACABAAZGF0YQYAAAD/fwCAAAA="]; + +SimpleTest.waitForExplicitFinish(); + +function base64ToUint8Buffer(b64) { + var str = atob(b64) + var u8 = new Uint8Array(str.length); + for (var i = 0; i < str.length; ++i) { + u8[i] = str.charCodeAt(i); + } + return u8; +} + +function fixupBufferSampleRate(u8, rate) { + u8[24] = (rate & 0x000000ff) >> 0; + u8[25] = (rate & 0x0000ff00) >> 8; + u8[26] = (rate & 0x00ff0000) >> 16; + u8[27] = (rate & 0xff000000) >> 24; +} + +function finishTest() { + testsDone += 1; + if (testsDone == tests.length) { + SimpleTest.finish(); + } +} + +function decodeComplete(b) { + ok(true, "Decoding succeeded."); + is(b.numberOfChannels, 1, "Should have 1 channel."); + is(b.length, 3, "Should have three samples."); + var samples = b.getChannelData(0); + ok(samples[0] > 0.99 && samples[0] < 1.01, "Check near 1.0. Got " + samples[0]); + ok(samples[1] > -1.01 && samples[1] < -0.99, "Check near -1.0. Got " + samples[1]); + ok(samples[2] > -0.01 && samples[2] < 0.01, "Check near 0.0. Got " + samples[2]); + finishTest(); +} + +function decodeFailed() { + ok(false, "Decoding failed."); + finishTest(); +} + +addLoadEvent(function() { + var context = new AudioContext(); + + for (var i = 0; i < tests.length; ++i) { + var u8 = base64ToUint8Buffer(tests[i]); + fixupBufferSampleRate(u8, context.sampleRate); + context.decodeAudioData(u8.buffer, decodeComplete, decodeFailed); + } +}); +</script> +</pre> +</body> +</html> |